Casting-mold



F. HACHMANN.

CASTING MOLD.

APPLICATION FILED IULY 5. 19m.

l,33'4,029 j Patented Mar. 16,1920.

f gti P5 f'y. 3.

f {NITE-D STATES RStiria'liliilllT FREDERICK HAGHMANN, OF ST. LOUIS, MISSOURI,

T0 NATIONAL METL DIE MGD QhlPiN, GF ST. IAU'LS, MISSITBI, A CORPGRATION OF MISSOURI.

Cas'rnveaaern.

Specification of Letters Patent.

Patented Mar. 16, 1920.

Application'iiled July 5, 1918. Serial. No. 243,280.

To all who/n t may coincer/L.'

Be it known th at l, FREDERICK HACHMAN N, a citizen of the United States, residing at the city of St. louis and State ot Missouri, have invented a new and useful Casting- Mold, ot vwhich the following is a specifi-l cation.

This invention relates to improvements in casting molds.

An yobject. of the invention is to provide a casting mold having a mold cavity and provided With means for supplying a volatile carbonaceous mat-ter to the rfalls ot the mold cavity in order to prevent adhesion or the material cast. v

Another object of the invention to provide a. casting mold having a. mold cavity. and passages for delivering to the Walls ot the mold cavity a volatile carbonaceous matter in order to prevent adhesion oi the material being cast. and also having venting passages to insure escape ot' the gases from the mold cavity during th casting operation. A

A further object is to provide a casting mold having oil containers for containing a quantity ot oil which is converted into a volatile carbonaceous matter by the heat ot the mold, and passages tor conducting the volatile carbonaceous matter to the tva-llev ot the mold cavity in order to prevent adhesion of the material being cast.

Figure 1 is a plan view ot a mold embodying my invention.

Fig. 2 is an elevation showing the inner surfaces of the side members of the mold and also the mold cavities and the venting passages. viewed from the line 2 2, ot Fig. 1. 1

Fig. 3 is a sectional view on the line 3-3 of Fig. 1.

Fig. 4 1s a view of the lower portion ot the mold. the portion being removed above the line 4 4 of Fig. 2. Y

My improved mold is composed ot a number of adJacently disposed sections having matching recesses which. when the sections are properly placed, form a mold cavity. As shown there are a pairvoimembers 1 forming the bottoni of the mold; a plurality of members 2 supported by the bottom and having matching recesses to'form a. part oi the mold cavity; a plurality ot members 3 supported by the members 2 and having matching recesses to form a part ot the lmold cavity; and a top comprising a pair insure the escape ot' members a supported by the members 3 having matchingy recesses 5 'forming the risers vtor the mold. and having matching recesses 6 forming a. receptacle tor the maassrenor., v .wenn ASSIGNMENTS,

terial being poured into the mold. From the receptacle 6 the material passes into the mold through gates 7.

The several members or sections forming the mold may be held in proper relative positionsrby pinsv 8 on certain sections enl gaging in appropriate holes in other sections; and obviously the entire mold may be combined or bound together by an appropriate trame it desired.

From each .mold cavity numerous inclined venting passages 9 are formed, the same extending upwardly and being arranged to oi the Jfrom the mold cavitiesduring the castingoperation. Also. when a number ot mold cavities are provided in the same mold a. number of venting passages 10 may be provided from each cavity, the same opening into an outlet passage 11 by Which the gases are discharged from the mold. Y

.la/[y present invention comprises means tor supplying a volatile carbonaceous matter to the mold Walls in order to prevent adhesion et the material being` cast. For this purpose I provide one or more containers 12 arranged to contain a substance such as oil which will be converted into a volatile carbona ceous matter when heated. As shown. there are a number ot the containerslQI in the form ot cups supported by rods 13 removabliT located Within appropriate chambers 14 formed in the mold Walls and provided with closures 15 tor closing the upper ends of the chambers to prevent escape ot the carbonaceous matter therefrom and to insure the passage of the carhonaceous matter to the walls ot the mold cavity through appropriately Vt'orrfied passages 16. llVhile I have shown a nin. ber ot the containers 12 it is 0bvious that the number may be varied as desired, and that only one ot said containers. or more. may be used.

The rods carrying be easily removed and the containers dipped into oil ot the proper quality. and then placed in the chambers 14.-. l/Vhen the mold is heated the oil. is converted into a volatile carbonaceous matter which passes through the passages 16 to the inner surfaces ot the mold walls upon or to which the carbonaceous matter settles `or adheres, forming a f be varied' described.

layer and preventing the adhesion of the 1naferial in the ineld. 'Vhen the casting 0pA eration is completed the inold sections may be taken apart and the article removed, and

Y the sanie operation repeated as etten as desired.

' A niold ot' this construction is highly useful and convenient in operation. The carbonaceeus matter continuouslj;V applied te the niold Walls as an incident te and result et the mold Walls beingsr heated by the casting;` operation. The heat converts the oil into a ,v'oiat-ile eai'benaceous inatte-r which conducted 'trein the mold walls continuous jy' between the castinb operations.

lit will be observed that the eil is not permitten to iov or pass into the mold cavities.. but that a continuelle supply ot superior and more etlicient caibonaceous matter is deposited on the nield alle zr an incident te use ot the :noldr in making; castine's.

shown, the containers l2 are adjusttdile uponv the rods 13 but it is obvious that the containers niajv be other Yise connected to the rods. VAlso the construction of the inoid 'zum' in numerous other prufticnlars Without departure troni the invention. not, restrict in; Aelt to the identical tenturesl ot construction illustrated7 but what I claim and desire to secure b Letters Patent, is z- 1. j.. casting mold'= comprising a nioldl bod)y having' a cavity adaptedto torni Va casting', containers adapted to contain a Ylubricant that will be converted to volatile carbonaceous matter by the heat ot the mold, and passages for condiictin e` the volatile. carbo* naceous cai/itin,

2. A.r casting' moldr` comprising a niold body having' a cavity adapted to forni a'casting, vtor cenfgtucting volatile carbof nac'eous inatter to the 'Wall di the meld, and eceptacles adaiited to contain lubricant that will be. conVert-edr to volatile carbonaceous matter by the heat the meld.

casting mold. coniprisini a mold 'l" havin a cavity adapted te torn: a cast.- chzunbeis in the mold body. oil containsaid charcbm's, and passa s' troni said iers openi into the nioh.. cavity.

Af. .et casting naold, xoniprising a niolzl bod't1 haring' a cavityv adapted to, torna. a castin ch; fnbere t co., itainers renioi'ably sniborted in said chambers, and navegas 'ein said chambers oneniiia o the n eid carita' 'for the purpose )arisingl a mold d to torni a castbolv, conto contain chambers 5. fr casting' mi bod;1 haring' inagchanibe tainers in said el a lubricznit. pasar 'cs Y og'icninge' into the meid earity adanted to conduct tile carbonn eene matter from said chamber intethe niold cavity, and a se.-V

i (lo matter to the Wall ot' the inold i cas-,ins ornied inthe mold body, oil

'verted into ries et rent-ing passages trein the inold cav-` ity adapted to insure escape'y of the gases troni said cavityl during' the casting operation. Y

6. A castingniold, comprising a plurali@7 et' sections arranged side by side to form a meid cavity, a series of containers adapted? te contain lubricant that will be converted to volatile cari'ionaceeus mattei' by the heat oi the mold, ineans tor supporting' said con-- tainlrs in position to be subjected to the heat et the inoid, Whereby'the lubricant in said containersin'ill be Converted into Volaile carbonaceous niet-ter, and a series of pastor conductingthe carbonaceous mat- `er'into the lnold cavity.

T. A casting-mold, comprising a niold body composed et' separable sections arranged side by side toiorin aniold cavityyveiitfing passages troni the lnold cavity adapted to. insure escape et' the Vgases freni said caifity'during. the casting operation, a series et' ccratainers adapted to contain a. lubricant, ineans. for supporting said containers inthe meld body vin such position that the lubricant will. be converted to volatile carbonaceous matt-e1' by the heat ofthe inohband passages for conf duc-tiine the volatile carbtmaceous matter f into the niold cavity.

Vsupported by the mold body adapted'tb contain a substance that will torni a `rolatile earbonaceeus matter when subjected-te heat, passages tor conducting. the volatile carbonaeeons matter into the mold cavity, i and means for preventiine` thev passag'euot the carbonaceous matter elsewl'iere than into! the mold cavity.

l0. A casting;` inold. comiirising a mold bod,T having a cavity adapted to me a y achainber in said mold body id-95- ed to containy a substance that will. be'cona volatile carbonaceousmatter when subject-ed to heatr` Vn ssae'es tor conducting` the'carbenaceousvinatter from said=- chamber to the moldcavityandfmeans for preventing' the passage et saidv substance 'from said chamber into the mold cavityll. A eating inold` comprising' a inold bodiy having` a cavity adapted to 'torni' a. casting'.v chambers in said bodif'aoapted to contain a material? tor 'torn'iinewiz carbfrf naceous mattei: passages ter conducting;the. carbonaceous matter tronr said chambers into the mold cavity, and means for preventing the material from which the carbonaceous matter is formed from passing Jfrom said chambers into the mold cavity.

1Q. A casting mold, comprising a mold body having a cavity adapted to form a casting, chambers ir said mold body adapted to contain a material that .vill form volatile carbonaceous matter when subj ected. to heat, passages for conducting the carbonaceous matter from said chambers into the mold cavity, and containers in said chambers adapted to contain substance t'or forming the volatile carbonaceous matter.

13. A casting mold, comprising a mold body having a cavity adapted to Jiorm a casting` chambers in said mold body adapted to contain a material that will form vola-I tile carbonaceous matter When subjected to heat, passages for conducting the carbonaceous i att-er trom said chambers into the mold cavity, containers in said chambers adapted tc contain substance 'for forming the volatile caibonac-eous matter, and means tor preventing the volatile carbonaceous matter from escaping from said chambers.V

lit. A castin(Y mold, comprising a mold body composed or" separable sections juxta- `posed to form a mold cavity adapted to form a casting, chambers in said mold body adapted to cont-ain a substance that will form volatile carbonaceous matter when subjected to heat, means for opening and Yclosing said chambers, and passages from said chambers to the mold cavity.

l5. A casting mold, comprising a mold body having a cavity adapted to form a casting, chambers in said mold bof: y, means for opening and closing said chambers, containers in said chambers adapted to contain a substance that Will be converted to volatile carbonaceous matter when subjected to .he heat et' the mold, and passages fron said chambers for conducting` the volatile carbonaceous matter into the mold cavity.

16. L casting mold, comprising a mold body having a cavity adapted 'to form a. casting, chambers in said mold body, con tainers supported in said chambers7 means for opening and closing said chambers, passages from said chambers opening into the mold cavity, and a series ot' venting passages from said cavity adapted to insure the escape of the gases from said cavity during the casting operation.

17. A. casting mold, comprising a mold body having a cavity adapted to form a casting. a passage i'or conducting the material to be cast into the mold cavity, 'passages from the mold cavity adapted to insure escape of the gases from said cavity during the casting operation, chambers in said mold body. containers removably supported in said chambers adapted to contain a substance that will be converted to volatile card bonaceous matter When subjected to heat, and passages fromv said chambers into the mold cavity. A

18,. A casting mold, comprising a mold body having a cavity adapted to form a casting, a passage for conducting the material to be cast into the mold cavity, passages from the mold cavity adapted to insure escape of the gases from said cavity during the casting operation, chambers in said mold body, containers removably supported in said chamber adapted to contain a substance that will be converted to volatile carbonaceous matter when subjected to heat, passages from said chambers into the mold cavity and devices tor closing said chambers to insure the passage of the volatile carbonaccous matter through said passages into the mold cavity.

19. A casting mold, comprising a mold body having a cavity adapted to form a casting, a container adapted to contain a substance that will be converted to volatile carbonaceous matter by the heat of the mold, and a passage for conducting the volatile carbonaceous matter to the Wall of the mold cavity.

20. A casting mold, comprising a mold body having a cavity adapted to form a casting, a container supported by said body adapted to contain a substance that Will be converted to volatile carbonaceous matter by the heat of the mold, and a series o'f upwardly inclined passages Jfor conducting the carbonaceous matter into the mold cavity.

2l. A casting mold, comprising `a mold body having a cavity adapted to form a casting, passages for conducting volatile carf bonaceous matter into the mold cavity, and a container for supporting a substance that will be converted to volatile carbonaceous matter by the heat of the mold, said container being arranged to prevent flow of said substance through said passages and to permit the volatile carbonaceous matter to pass through said passages into the mold cavity.

22. A casting mold, comprising a body having a cavity adapted to form a casting, a container adapted to contain a substance for forming volatile carbonaceous matter,

passage Yfor conducting the volatile carbonaceous matter from said container into the mold cavity to prevent adhesion of the ma' terial cast in the mold cavity, and venting passages from the mold cavity adapted to insure escape ot the gases from the mold cavity during the casting operation.

23. A. casting mold, comprising a body having a cavity adapted to form a casting, a container' adapted to contain a substance for preventing adhesion to the mold body of the material being cast, and a passage for conducting the substance Ifrom said container to the Wall of the mold cavity.

FREDERICK HACHMANN. 

